How Is a Sikh Child Named, According to Tradition

How is a Sikh child named, according to tradition?

A) A granthi is consulted, who suggests a name based on the parents' personalities.
B) The Adi Granth is opened at random and the first letter of the first composition on the left-hand page is noted; then a name beginning with the same letter is chosen.
C) The Adi Granth is opened at random, and a random word is chosen from the left-hand page; that word becomes the child's name.
D) A name is chosen from a special book of names composed by the tenth Guru, Gobind Singh.
E) Parents sit for a whole day in silent prayer and contemplation in the gurdwara.